12 replies to this topic

[minifan08]

hi all
iv recently painted my 1990 mini city with mipa 2k solid color paint and i am having terrible problems with fish eyes. iv been told that they are caused by silicone on surface and i should take care when degreasing but i have degreased 3 times and still i get them so does anybody know how to get rid of them once there on the panel (i presume sanding) and how to stop them coming back?
regards Chris.

[coopermpi]

have you tried flatting off the suface and dry spraying over it to build it up? Think it is caused by silicone/ polish left on the surface.

[minifan08]

have you tried flatting off the suface and dry spraying over it to build it up? Think it is caused by silicone/ polish left on the surface.

thanks 4 that copper al have to try it do you no how to produce dry spray as i have forgotten
regards

[coopermpi]

i normally blow over from more of a distance so its more dry. The closer you get the wetter it is and more chance of runs. Id try just flatting it off with some wet and dry fine, guve it a few blow overs, see if they go, then you can always give it a quick flat off again before a wet coat to get some shine.
Its worked for me in the past.

[minidaves]

or other things like dashcleaner or rubber cleaners, oil down air line, are other was to get fish eyes

depending how many u get, if a solid colour you can of course dob them in with a small brush and wet flat and polish

dave

[jack_marshall]

Nightmare.

As said all you can do is flat them out and repaint.

You can buy anti silicone drops to put in your paint too, with varied success.

Panel wipe generously and with lots of clean cloths too.

[panelbeaterpeter]

I sometimes wait for the paint to flash off, and drop paint into the silicones, then flat it back after. It's always good to try and find where the contamination is coming from, although in a non bodyshop environment it could be anywhere!

[Shifty]

If it were contamination under the paint would bar coat help?

Not really a suggestion, just curious?

[Darkscamp]

had a problem with fish eye when i used to spray iron gates. we wiped down all the surfaces, new gun, hoses, the works but it still kept coming back. turned out in the end to be the actual paint from the supplier. he gave us some drops to put in it(free of charge) and it never happened again.

as for your current paint, it will need taking back a bit before spraying again as silicone is virtually impossible to remove completely i'm afraid.

[jack_marshall]

Ive done the same as pete before if your just getting a handful.

Get a very fine pointed brush and when your last coat has gone tacky you can blob them in out your mixing pot, give it another 2-3 minutes and then your next coat.

Once nibbed and polished you cannot tell.

[jack_marshall]

If it were contamination under the paint would bar coat help?

Not really a suggestion, just curious?

Silicone/ fisheye marks dont come from older paint or something underneath, thats a reaction.. which barcoat stops.

[minifan08]

thanks for the suggestions guys iv been back to my paint suppliers an iv got some anti silicone additive so im going to try that next weekend so ill let everyone know how it turns out.
regards chris.

[1984mini25]

To save me starting a new tread….

Basically I been re-spraying the 25 and lacquering it this time, which in parts considering under the circumstances I’m doing it, hasn’t turned out too bad. I did how ever have a load of runs down both sides, more down to doing it in a cramped garage. So doing a side at a time so I have a bit more room to play in I’ve sanded the runs back, gone back over with silver and re-lacquered, with no more runs this time.

The problems I’ve got now is I accidentally dropped something on one of the front wings, which although the paint was dry, had been left for 2 days it was still soft with it being enamel based. So I’d chipped and scratched the paint, but what with it being a light metallic silver, meant I had to sand it back again and go back over it, etc.

The problem I’ve been having is every time I’ve gone to spray the sliver base coat it starts off fine, but these clear blobs keep appearing, I’ve mixed up a new batch of paint and cleaned out the gun in the hope of it being some of the left over lacquer possibly mixing and causing the reaction, but with no difference.

So if I’ve got this right, and this is getting frustrating having to keep re-painting the same panel, that the reaction is caused by the panel not being completely spotless before spraying?